Roget's Thesaurus: Entry 343 (Gulf)

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#343. Gulf. Lake -- N. land covered with water, gulf, gulph[obs], bay, inlet, bight, estuary, arm of the sea, bayou [U.S.], fiord, armlet; frith[obs], firth, ostiary|, mouth; lagune[obs], lagoon; indraught[obs]; cove, creek; natural harbor; roads; strait; narrows; Euripus; sound, belt, gut, kyles[obs]; continental slope, continental shelf.

lake, loch, lough[obs], mere, tarn, plash, broad, pond, pool, lin[obs], puddle, slab, well, artesian well; standing water, dead water, sheet of water; fish pond, mill pond; ditch, dike, dyke, dam; reservoir &c. (store) 636; alberca[obs], barachois[obs], hog wallow [U.S.].

Adj. lacustrine[obs].